https://blog.wu-boy.com/tags/mysql-5.6/Recent content in MySQL 5.6 on 小惡魔 - AppleBOYHugoen-usappleboy.tw@gmail.com (Appleboy)appleboy.tw@gmail.com (Appleboy)Thu, 23 Jan 2014 03:20:08 +0000https://blog.wu-boy.com/2014/01/mysql-5-6-uuid-cloning-slave-server/Thu, 23 Jan 2014 03:20:08 +0000appleboy.tw@gmail.com (Appleboy)https://blog.wu-boy.com/2014/01/mysql-5-6-uuid-cloning-slave-server/<div style="margin:0 auto; text-align:center"> <a href="https://www.flickr.com/photos/appleboy/8171305355/" title="mysql_logo by appleboy46, on Flickr"><img src="https://i1.wp.com/farm9.staticflickr.com/8488/8171305355_7fb578fdc9.jpg?w=300&#038;ssl=1" alt="mysql_logo" data-recalc-dims="1" /></a> </div> <p>在 <a href="http://www.mysqlperformanceblog.com/">MySQL Performance Blog</a> 看到這篇 <a href="http://www.mysqlperformanceblog.com/2014/01/21/beware-mysql-5-6-server-uuid-cloning-slaves/">Beware of MySQL 5.6 server UUID when cloning slaves</a>，裡面提到如果是要複製資料到 Slave 機器，大部分的使用者肯定是將 <code>/var/lib/mysql</code> 目錄整個 copy 到 Slave 機器上。如果是 <a href="http://dev.mysql.com/tech-resources/articles/whats-new-in-mysql-5.6.html">MySQL 5.6</a> Server 目錄內會有 <code>auto.cnf</code> 設定檔，這是 MySQL 5.6 新的功能叫做 <a href="http://dev.mysql.com/doc/refman/5.6/en/replication-options.html#sysvar_server_uuid">server_uuid</a>，在啟動 MySQL 後，就會自動建立 <code>auto.cnf</code> 檔案，此檔案就像是 <code>my.cnf</code> 或 <code>my.ini</code> 設定檔一樣，只是內容只有支援 <code>[auto]</code> 並且只有支援 <code>server_uuid</code> 這 key 值，例如</p>